The Hershey Company has been receiving complaints that their chocolate almond bars contain fewer almonds than they've previously contained. Hershey's records show that over time each bar of candy contains a mean of 17 almonds. A sample of 30 of last month's chocolate bars has a mean of 14 almonds with a standard deviation of 8. Test the hypothesis (alpha

42

step-by-step explanation:

hello,

b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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step-by-step explanation:

the answer is 11.2 (i know i’m late)